Sakuya teases Nagi explaining that she is so bratty that she can't take care of young children. Furious, she asks Hayate to go out and find her kids to take care of.
Damn them... Returning my 
kindness with ingratitude...
Desgraciados... Me pagan mi 
amabilidad con su ingratitud...
Maldição... Retribuindo minha 
gentileza com essa ingratidão...